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1. 发明授权

US3641453A Modified open cycle gas laser system 失效
标题翻译：改装开放循环气体激光系统
公开(公告)号：US3641453A
公开(公告)日：1972-02-08
申请号：US3641453D
申请日：1969-09-10
申请人： UNITED AIRCRAFT CORP
发明人： BIANCARDI FRANK R , MELIKIAN GORKEN
IPC分类号： H01S3/097 , H01S3/0979 , H01S3/04 , H01S3/09 , H01S3/22
CPC分类号： H01S3/097 , H01S3/0979
摘要： A flowing gas ''''mixing'''' laser of the type which introduces a lasing gas into the laser chamber in proximity with the optical cavity, and provides excited energizing gas to the laser chamber separately, uses the cooling capacity of the liquefied lasing gas to improve the overall operation of the system. In one embodiment, the source of liquefied lasing gas is utilized as a coolant in a heat exchanger connected between the gas laser outflow and the inlet to the compressor used to cause gaseous flow through the laser. The compressor inlet temperature is reduced, thus permitting an increase in the capacity of the compressor and a reduction in the power of the prime mover which operates the compressor. In one variation of this embodiment, the lasing gas, from a liquefied source thereof is passed through the compressor inlet gas heat exchanger and is also utilized to cool the jacket of the laser chamber. In another variation of this embodiment, the lasing gas that is utilized as a coolant in a heat exchanger is vented to atmosphere, and the source of liquefied lasing gas also supplies the laser independently of the heat exchanger. In still another variation of this embodiment, a water cooled heat exchanger is used to precool the laser effluent before passing through the laser gas cooled heat exchanger. In another embodiment of the invention, the source of liquefied lasing gas is introduced in proximity with the laser chamber as a lasing gas and is separately used in heat exchangers to cool the inlet air and the gases leaving the laser chamber, and then vented to ambient. In each embodiment, the outflow of the compressor is vented to ambient, and the prime mover also powers an electric generator to operate a power supply that produces high-voltage DC current for a DC electric discharge plasma excitation means.
摘要翻译：一种流动气体“混合”激光器，其类型将激光气体引入到与光学腔体接近的激光室中，并且分别向激光器腔提供激发的激励气体，使用液化的激光气体的冷却能力来改善整体系统的操作。在一个实施例中，液化气体源被用作连接在气体激光出口和压缩机入口之间的热交换器中的冷却剂，用于使气体流过激光。压缩机入口温度降低，从而允许增加压缩机的容量并降低操作压缩机的原动机的功率。在该实施例的一个变型中，来自其液化源的激光气体通过压缩机入口气体热交换器，并且还用于冷却激光室的护套。在该实施例的另一变型中，在热交换器中用作冷却剂的激光气体被排放到大气中，并且液化激发气体源也独立于热交换器供应激光。在该实施例的又一变型中，水冷式热交换器用于在通过激光气体冷却的热交换器之前预冷却激光流出物。在本发明的另一个实施例中，液化的激光气体源作为激光气体被引入激光室附近，并且分别用于热交换器以冷却离开激光室的入口空气和气体，然后排放到环境中。在每个实施例中，压缩机的流出被排放到环境中，并且原动机还为发电机供电以操作产生用于DC放电等离子体激发装置的高压DC电流的电源。

2. 发明授权

US3668549A Extended closed cycle gas laser system 失效
标题翻译：扩展闭合循环气体激光系统
公开(公告)号：US3668549A
公开(公告)日：1972-06-06
申请号：US3668549D
申请日：1969-09-10
申请人： UNITED AIRCRAFT CORP
发明人： BIANCARDI FRANK R , MELIKIAN GORKEN
IPC分类号： H01S3/097 , H01S3/0979 , H01S3/04
CPC分类号： H01S3/0979 , H01S3/097
摘要： A flowing gas laser system is connected to a closed cycle, so that the gas effluent is reused, the gases being refrigerated to a temperature between 100* F and minus 40* F, or lower utilizing either heat exchange with a refrigeration cycle or gas expansion means, with or without additional pre-cooling utilizing ambient heat exchangers. Embodiments include premixed laser systems, and mixing type systems wherein the lasing gas is separated from other gases, in which case cooling to a point below ambient takes place after the separation.
摘要翻译：流动气体激光系统连接到闭合循环，使得气体流出物被再次使用，气体通过与制冷循环或气体膨胀的热交换而被冷藏到100°F至-40°F之间的温度意味着，使用或不使用环境热交换器进行附加的预冷却。实施例包括预混合激光系统以及其中激光气体与其它气体分离的混合型系统，在这种情况下，在分离之后发生低于环境温度的情况。

3. 发明授权

US3876959A Regenerative laser system 失效
标题翻译：再生激光系统
公开(公告)号：US3876959A
公开(公告)日：1975-04-08
申请号：US48751774
申请日：1974-07-11
申请人： UNITED AIRCRAFT CORP
发明人： BIANCARDI FRANK R , LANDERMAN ABRAHAM , MELIKIAN GORKEN
IPC分类号： H01S3/095 , H01S3/22
CPC分类号： H01S3/095
摘要： Regenerative apparatus for exhausting the working medium from the optical cavity of a laser and for supplying preheated diluent to the reaction chamber of a laser is disclosed. In an aftercooler thermal energy is exchanged between the working medium exhausted from the optical cavity and a cryogenic coolant which is subsequently utilized as the motive fluid for an ejector and as a diluent in the production of laser gas. Highly toxic and corrosive gases are condensed out of the working medium as the cryogenic coolant is evaporated and superheated. A preheater transfers additional heat to the diluent before the diluent enters the reaction chamber.

4. 发明授权

US3648194A Semiclosed cycle gas laser system 失效
公开(公告)号：US3648194A
公开(公告)日：1972-03-07
申请号：US3648194D
申请日：1969-09-10
申请人： UNITED AIRCRAFT CORP
发明人： MELIKIAN GORKEN , BIANCARDI FRANK R
IPC分类号： H01S3/097 , H01S3/0979 , H01S3/09 , H01S3/04 , H01S3/22
CPC分类号： H01S3/097 , H01S3/0979
摘要： A flowing gas laser system of the mixing type removes lasing gas from the laser effluent so as to recycle the remaining gas, such as a mixture of energizing gas and relaxant gas. Fresh lasing gas is introduced into the system from a pressurized source thereof. Typically, carbon dioxide is removed from the laser effluent so as to permit reuse of a mixture of helium and nitrogen, by means of a lithium oxide or lithium hydroxide solid absorbent bed which is cooled by expanded CO2 from the liquefied source. In one embodiment, the liquid CO2 also precools the main gas flow prior to entrance into the CO2 adsorber. The warmed CO2, with or without additional external heat supplied thereto, is passed through an expander, which operates a turbine to drive a compressor used for creating flow through the system. The CO2 which leaves the expander at temperatures of about 0* F. is then divided into two streams. One stream may be used to precool the laser effluent gases prior to reaching the compressor inlet as well as cool the laser chamber, while the other stream is used directly in the laser chamber. An excess of CO2 may be flowed through all of the above-described processes by venting some of it to ambient, and using only part of it as the lasing gas, or a part of the CO2 may be passed directly from the liquefied source into the laser chamber. A second embodiment employs a prime mover to drive the flow-inducing compressor, the liquid CO2 being expanded and passed directly into the laser chamber at a very low temperature or serving to remove heat from the CO2 adsorber, prior to its use as a lasing gas. External coolants are provided so as to cool the adsorbent or pre- and post- cool the laser effluent as it moves through a compressor, thereby maintaining the size of the compressor and the power requirements thereof quite small. Electrical power may be generated on the compressor drive shaft in either embodiment. The latter embodiment may employ readily available electrical power to run an electric excitation power supply, and even a small electric motor to drive the compressor.

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